This is the same problem I had with my 2d stuff... and the collisions are working correctly... You'll have to find a way to judge the distance between the two objects when the collision happens, and manually move it to sit "next to" the second object.
In my 2d stuff this involved me setting up dummy variables and testing a collision from the dummy variables before actually moving a sprite... then i would get the collision position and move it to there once it collided.
In my 2d stuff this involved me setting up dummy variables and testing a collision from the dummy variables before actually moving a sprite... then i would get the collision position and move it to there once it collided.